/* ============================================
   HIMALAYA POWER - BASE STYLES
   Mobile-First Design System
   ============================================ */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
  /* Colors - Dark Blue Theme */
  --primary-dark: #0a1628;
  --primary-blue: #0d1b2a;
  --secondary-blue: #1b263b;
  --accent-cyan: #00d9ff;
  --accent-teal: #00bfa5;
  --accent-blue: #2196f3;
  --neon-blue: #00e5ff;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #0a1628 0%, #1b263b 100%);
  --gradient-accent: linear-gradient(90deg, var(--accent-cyan), var(--accent-teal));
  --gradient-hero: linear-gradient(180deg, rgba(10, 22, 40, 0.95) 0%, rgba(27, 38, 59, 0.98) 100%);

  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #b8c5d6;
  --text-muted: #8899aa;
  --text-dark: #0a1628;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Poppins', 'Inter', sans-serif;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;

  /* Borders & Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(0, 217, 255, 0.3);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Layout */
  --max-width: 1280px;
  --navbar-height: 70px;
}

/* ============================================
     RESET & BASE
     ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--gradient-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ============================================
     TYPOGRAPHY
     ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

h1 {
  font-size: var(--font-size-3xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-2xl);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--font-size-xl);
}

h4 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--neon-blue);
}

strong {
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-height);
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-heading);
  /* No z-index - stays behind menu naturally */
  transition: opacity 0.3s ease;
}

.navbar-logo span {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}


/* Mobile Menu Toggle */
.navbar-toggle {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  z-index: 1002;
  position: relative;
}

.hamburger {
  width: 28px;
  height: 20px;
  position: relative;
  transform: rotate(0deg);
  transition: 0.3s ease-in-out;
}

.hamburger span {
  display: block;
  position: absolute;
  height: 3px;
  width: 100%;
  background: var(--text-primary);
  border-radius: 3px;
  opacity: 1;
  left: 0;
  transform: rotate(0deg);
  transition: 0.25s ease-in-out;
}

.hamburger span:nth-child(1) {
  top: 0px;
}

.hamburger span:nth-child(2) {
  top: 9px;
}

.hamburger span:nth-child(3) {
  top: 18px;
}

.navbar-toggle.active .hamburger span:nth-child(1) {
  top: 9px;
  transform: rotate(135deg);
}

.navbar-toggle.active .hamburger span:nth-child(2) {
  opacity: 0;
  left: -60px;
}

.navbar-toggle.active .hamburger span:nth-child(3) {
  top: 9px;
  transform: rotate(-135deg);
}

/* Navigation Menu */
.navbar-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  background: var(--primary-blue);
  padding: calc(var(--navbar-height) + var(--spacing-lg)) var(--spacing-lg) var(--spacing-lg);
  transition: right var(--transition-base);
  box-shadow: var(--shadow-lg);
  overflow-y: auto;
  z-index: 1001;
  /* CRITICAL: Above overlay */
}

.navbar-menu.active {
  right: 0;
}

.navbar-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.navbar-links li a {
  display: block;
  padding: var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.navbar-links li a:hover,
.navbar-links li a.active {
  color: var(--accent-cyan);
  background: rgba(0, 217, 255, 0.1);
  transform: translateX(5px);
}

/* Overlay */
.navbar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(3px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 999;
  /* Below menu */
}

.navbar-overlay.active {
  opacity: 1;
  visibility: visible;
}


/* ============================================
     BUTTONS
     ============================================ */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  font-family: var(--font-heading);
  text-align: center;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-accent);
  color: var(--text-dark);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--accent-cyan);
  border: 2px solid var(--accent-cyan);
}

.btn-secondary:hover {
  background: var(--accent-cyan);
  color: var(--text-dark);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

/* ============================================
     FORMS
     ============================================ */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  font-size: var(--font-size-base);
  font-family: var(--font-primary);
  color: var(--text-primary);
  background: rgba(27, 38, 59, 0.5);
  border: 2px solid rgba(0, 217, 255, 0.2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-error {
  color: #ff5252;
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

/* ============================================
     CARDS
     ============================================ */
.card {
  background: rgba(27, 38, 59, 0.6);
  border: 1px solid rgba(0, 217, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-cyan);
}

.card-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-2xl);
}

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--text-secondary);
}

/* ============================================
     FOOTER
     ============================================ */
.footer {
  background: var(--primary-dark);
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
  margin-top: var(--spacing-2xl);
  border-top: 1px solid rgba(0, 217, 255, 0.2);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.footer-section {
  text-align: left;
}

.footer-section h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
  color: var(--accent-cyan);
  text-align: left;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-links a {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-cyan);
  padding-left: var(--spacing-xs);
}

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* Footer Contact Section */
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  text-align: left;
}

.footer-contact-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  align-items: flex-start;
  text-align: left;
}

.footer-contact-label {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 0;
  text-align: left;
}

.footer-contact-link {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
  word-break: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
  display: block;
  line-height: 1.5;
  text-align: left;
}

.footer-contact-link:hover {
  color: var(--accent-cyan);
  padding-left: 0;
}


/* ============================================
     UTILITY CLASSES
     ============================================ */

/* Spacing */
.mt-xs {
  margin-top: var(--spacing-xs);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mt-xl {
  margin-top: var(--spacing-xl);
}

.mb-xs {
  margin-bottom: var(--spacing-xs);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.pt-lg {
  padding-top: var(--spacing-lg);
}

.pt-xl {
  padding-top: var(--spacing-xl);
}

.pt-2xl {
  padding-top: var(--spacing-2xl);
}

.pb-lg {
  padding-bottom: var(--spacing-lg);
}

.pb-xl {
  padding-bottom: var(--spacing-xl);
}

/* Text Alignment */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

/* Display */
.d-none {
  display: none;
}

.d-block {
  display: block;
}

.d-flex {
  display: flex;
}

/* Containers */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-2xl) 0;
}

.section-title {
  font-size: var(--font-size-3xl);
  text-align: center;
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: var(--gradient-accent);
  margin: var(--spacing-md) auto 0;
  border-radius: 2px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Grid Systems */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: 1fr;
}

.grid-3 {
  grid-template-columns: 1fr;
}

.grid-4 {
  grid-template-columns: 1fr;
}

/* ============================================
     ANIMATIONS
     ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

.fade-in {
  opacity: 0;
  animation: fadeIn 0.6s ease forwards;
}

.slide-in-left {
  opacity: 0;
  animation: slideInLeft 0.6s ease forwards;
}

.slide-in-right {
  opacity: 0;
  animation: slideInRight 0.6s ease forwards;
}

/* Scroll Reveal (applied via JS) */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
     IMAGE PLACEHOLDERS
     ============================================ */
.img-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(0, 191, 165, 0.1));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  border: 2px dashed rgba(0, 217, 255, 0.3);
}

/* ============================================
     DESKTOP STYLES (768px+)
     ============================================ */
@media (min-width: 768px) {

  /* Typography */
  h1 {
    font-size: var(--font-size-4xl);
  }

  h2 {
    font-size: var(--font-size-3xl);
  }

  /* Navbar */
  .navbar-toggle {
    display: none;
  }

  .navbar-menu {
    position: static;
    width: auto;
    height: auto;
    max-width: none;
    padding: 0;
    background: transparent;
    box-shadow: none;
    overflow-y: visible;
  }

  .navbar-links {
    flex-direction: row;
    gap: var(--spacing-md);
  }

  .navbar-links li a {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-base);
  }

  .navbar-links li a:hover {
    transform: none;
  }

  .navbar-overlay {
    display: none;
  }

  /* Grid Systems */
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Container */
  .container {
    padding: 0 var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Footer - 4 columns on desktop */
  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ============================================
   MOBILE OPTIMIZATIONS FOR FOOTER CONTACT
   ============================================ */
@media (max-width: 480px) {

  /* Tighter spacing on small mobile screens */
  .footer-contact {
    gap: var(--spacing-sm);
  }

  .footer-contact-group {
    gap: 6px;
  }

  .footer-contact-label {
    font-size: 0.813rem;
    margin-bottom: 2px;
  }

  .footer-contact-link {
    font-size: 0.75rem;
    line-height: 1.4;
    padding: 2px 0;
  }

  /* Ensure footer sections have adequate spacing */
  .footer-section {
    margin-bottom: var(--spacing-md);
  }

  .footer-section:last-child {
    margin-bottom: 0;
  }
}

/* Tablet optimizations */
@media (min-width: 481px) and (max-width: 767px) {
  .footer-contact-link {
    font-size: 0.813rem;
  }

  .footer-section {
    margin-bottom: var(--spacing-sm);
  }
}